Of course, the way to insult fellow Arabs remains the same: just accuse them of being Zionist.
The latest example comes from Egypt's Al Bawabh News, an anti-Muslim Brotherhood newspaper. They are accusing Sheikh Yusuf Qaradawi - one of the most influential clerics in Sunni Islam, whose weekly Qatar-based TV show reaches tens of millions, and who explicitly supports killing Israeli civilians - of being a Mossad agent!
Qaradawi is originally from Egypt, supports the Muslim Brotherhood and has been very critical of the UAE, Saudi Arabia and other Arab countries who do not support the Islamist group.
The logic behind this brilliant analysis is that Qaradawi has not specifically condemned recent reports of Jews visiting the Temple Mount.
It just so happens that Qaradawi's weekly broadcast sermon was cancelled for the past three weeks, and at the last minute this week, indicating that he may be ill. (He only admitted to having a cold.) But the Al Bawabh article goes on from there.
It claims that he has visited Israel three times, that he knows Hebrew, and that he has met with senior rabbis (a few years ago he did greet a delegation of Neturei Karta idiots, and has had to fight rumors that he is pro-Israel ever since.)
The article goes on to claim that Qaradawi was praised by the US Congress (according to some news stories, he has been banned from the US since 1999), it quotes an Egyptian professor who calls him a "prostitute" for the West, that there are photos of him with the Chief Rabbi of Israel (in reality, last year Qaradawi boycotted an interfaith conference when he discovered a liberal Jew would attend,) and that he met with Jews in Gaza.
Here is a graphic from the homepage of this same news site, indicating that the Muslim Brotherhood is in fact Zionist itself:
Liberal, religious, Islamist, reformer, secular - there is always one constant in the Arab world, and that is how much they hate Jews and Israel. In public.